Fatal error: Uncaught Error: Class 'PhpParser\Node\Expr\AssignOp' not found in /home/app/htdocs/message_gateway/vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Plus.php:7 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/nikic/php-parser/lib/PhpParser/Node/Expr/AssignOp/Plus.php on line 7